Get this game. Online multiplayer is uber, the achievements are hard to get which keeps you playing and with the new map pack coming you'll never want to leave your home! The single players story is simple and fun and there is 4 difficultys to choose from which should keep the more experienced gamer happy. Im currently playing through it on the hardest difficulty and have enjoyed it every step of the way. My time online is well over the 100 hour mark and will keep on increasing.
I can see this as being a classic in years to come as Goldeneye has become and will keep on coming back to it.